../ dmsp_15_ephemeris_20170614.txt 22-Jun-2023 16:49 109501 dmsp_16_ephemeris_20170614.txt 22-Jun-2023 16:49 109442 dmsp_17_ephemeris_20170614.txt 22-Jun-2023 16:49 109647 dmsp_18_ephemeris_20170614.txt 22-Jun-2023 16:49 109615